Definitions
The vertical change between two points on a graph.
What is the rise?
The slope of a line that passes through these points: (9,6) and (7,2)
What is 2?
The value of x: 11 = -3x - 10
What is -7?
A movie theater membership costs $75 a year plus $2 per movie. For non-members the cost of a movie is $5.75. The number of movies after which membership saves money.
What is 20?